From: Andrzej Hajda <a.hajda@samsung.com>
Date: Wed, 15 Mar 2017 15:41:08 +0100
Subject: drm/exynos/decon5433: kill DECON_UPDATE workaround
Git-commit: f8172eb3b28b2a497fcbabd7b2d9048ca2b585fc
Patch-mainline: v4.13-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Since fixing CMU code (drm/exynos/decon5433: fix CMU programming)
DECON started behave predictable and does not need special care
during DECON_UPDATE writes.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/exynos/exynos5433_drm_decon.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -51,8 +51,7 @@ enum decon_flag_bits {
 	BIT_CLKS_ENABLED,
 	BIT_IRQS_ENABLED,
 	BIT_WIN_UPDATED,
-	BIT_SUSPENDED,
-	BIT_REQUEST_UPDATE
+	BIT_SUSPENDED
 };
 
 struct decon_context {
@@ -399,7 +398,6 @@ static void decon_update_plane(struct ex
 
 	/* window enable */
 	decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
-	set_bit(BIT_REQUEST_UPDATE, &ctx->flags);
 }
 
 static void decon_disable_plane(struct exynos_drm_crtc *crtc,
@@ -412,7 +410,6 @@ static void decon_disable_plane(struct e
 		return;
 
 	decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
-	set_bit(BIT_REQUEST_UPDATE, &ctx->flags);
 }
 
 static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
@@ -429,8 +426,7 @@ static void decon_atomic_flush(struct ex
 	for (i = ctx->first_win; i < WINDOWS_NR; i++)
 		decon_shadow_protect_win(ctx, i, false);
 
-	if (test_and_clear_bit(BIT_REQUEST_UPDATE, &ctx->flags))
-		decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
+	decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
 
 	if (ctx->out_type & IFTYPE_I80)
 		set_bit(BIT_WIN_UPDATED, &ctx->flags);